Rgp
[医][=retrograde pyelogram]逆行肾盂x线照片
🗣️ 情景例句
Due to lack of funds
由于缺乏经费
The world is a ladder for some to go up and some down.
人间犹如一架梯，有人缘梯上升，有人顺梯下降。
It's about four hundred yards down this street.
城堡就在这条街上，（离这儿）400码左右。